What component generates the high voltage necessary to make a spark in a vehicle?

The component that generates the high voltage necessary to make a spark in a vehicle is the ignition coil. It converts the low voltage from the battery into a much higher voltage, typically between 12,000 to 45,000 volts, which is needed to create a spark at the spark plug. This high voltage ignites the air-fuel mixture in the engine's combustion chamber, enabling the engine to run.